Marcus,
Thank you for posting that. I followed van der Geest's posts with great
interest, but I didn't notice him posting that information. Perhaps I missed
it. It would be of interest to hear from the folks at TNO and Materialize
whether they are conforming to that specification. If both of them are, then
I will take that as a standard color extension and add it to our Web page on
the StL spec. It would also be helpful to know if TNO and Materialize are
using any particular name to refer to the extended spec and what file
extension they are using for files that use it (".StL" or something else?).
Best regards,
Marshall Burns
President, Ennex Corporation
Marshall@Ennex.com
Los Angeles, USA, (310) 397-1314
http://www.Ennex.com
----- Original Message -----
From: "Marcus Joppe" <mjoppe@marcam.de>
To: <rp-ml@bart.lpt.fi>
Sent: Friday, November 17, 2000 09:29
Subject: Re: stl files
> Marshall,
>
> an extension for the STL format to use colour information has already been
> published to the rp-ml from Aad van der Geest one year ago.
> We are using this extension within our new RP software VisCAM RP which
will be
> shown on the Euromold 2000 in Frankfurt and released in the first quarter
of
> next year. I'm not sure, but I think other software vendors are using the
colour
> extension in the same way.
>
> Following is the extension of the STL format from Aad van der Geest:
>
> For every triangle the colour information is in the attribute count (16
bits).
> bit 15 always 1 (to distinguish from normal stl files)
> bit 10 to 14 intensity level for red (0 to 31)
> bit 5 to 9 intensity level for green (0 to 31)
> bit 0 to 4 intensity level for blue (0 to 31)
> In this way there are 32768 different colours.
>
> --
> Best regards
> Marcus Joppe
>
> -----------------------------------------------------
> Marcam Engineering BIBA Gebaeude
> Marcus Joppe Hochschulring 20
> 28359 Bremen
> Tel.: +49 (0)421/218-5633
> Fax: +49 (0)421/218-5633
> eMail: mjoppe@marcam.de Mobil: +49 (0)170/751-8801
> -----------------------------------------------------
>
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
This archive was generated by hypermail 2.1.2 : Tue Jun 05 2001 - 23:04:45 EEST